The Axolotl

Summary

The Axolotl is a powerful extradimensional creature who is mentioned by Bill Cipher while being erased by Memory Gun during the Weirdmageddon. It is later mentioned by Bill once again on Journal 3, and only makes his first appearence in "Dipper and Mabel and the Curse of the Time Pirates' Treasure!: Select Your Own Choose-Venture", when Dipper and Mabel encounter the Axolotl in "the time and space between time and space".